Is there a way to modify how Moodle grade the quizzes scores? So far I see that the result is calculated "(points obtained / Total Points) * Max Grade" and that shows the numerical result. I need to modify this formula to something else, in other words what I want to accomplish is the following:

"[(Points Obtained / Total Points)*4] +1"

for example,

Quiz total points: 10

Quiz Max Grade: 5

if a student scores 6 points then the grade will be **(6/10)*5 = 3 **this is the normal way.

With the new formula it should be** [(6/10)*4]+1 = 3.4 **this would be the result that is requested for us to show.

I am a teacher in a small school in Panama, Republic of Panama and that is the grading scale required by the Ministry of Education, Moodle saves me a lot of time of manual grading, but with this change I need to be re-grading the quizzes in the grader and that is really the same thing as marking papers.

Any help would be highly appreciated!

Jose